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2.5 APV ParaWeld – welded plate pairs
APV ParaWeld plate pair is a right- and left-
hand plate laser welded together to form a
pair. This welded plate pair system is
particularly suitable for use with refrigerants
such as ammonia and Freon or with other
aggressive liquids that could otherwise attack
the gaskets in a conventional heat exchanger
plate.
When the welded pairs are installed in a
frame, each pair is sealed by elastomeric
seals.
LNote: An APV ParaWeld plate pair cannot
be separated for inspection and cleaning. It is,
therefore, important to prevent fouling and
clogging of the welded passage.
If fouling in the welded passage cannot be
prevented, then cleaning must be done by
circulating a cleaning solution. It is
recommended that you contact a supplier of
cleaning agents for advice.
Ì! The two sides of APV Paraweld PHE
may have different pressure and fluid
compatibility and therefore care must be
exercised in connecting the fluids correctly.
Ì! APV Paraweld PHE is not suitable for
hygienic duties where organic fouling is
expected, for example, dairy products.
2.6 Inline Filters
For industrial applications involving fibres or
particles which might foul the heat exchanger
plates or block the heat exchanger passages,
an APV in-line filter is recommended.
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